Machine for reducing hard and rough surfaces to a polished condition.



A. R. SEAMAN.

MACHINE FOR REDUCING HARD AND ROUGH SURFACES TO A POLISHED CONDITION. APPLICATION FILED SEPT-20,1916.

1,224,5Q6 Patented May I, 1917.

MM CM Ryan/tor .UNTTED BTATEB PATENT @FFTEE.

ALBERT R. SEAMAN, OF SOUTH CONNELLSVILLE, PENNSYLVANIA.

MACHINE FOR REDUCING HARD AND ROUGH SURFACES TO A POLISHED CONDITION.

Specification of Letters Patent.

Patented May it, 1917.

Application filed September ZO, 1916. Serial No. 121,325.

To all whom it may concern:

Be it known that I, ALBERT R. SEAMAN, a citizen of the United States of America, residing at South Connellsville, in the county of Fayette of the State of Pennsylvania, have invented a new and useful Machine for Reducing Hard and Rough Surfaces to a Polished Conditiomof which the following are specifications and drawings.

My invention relates to polishing many hard and rough surfaces, especially the molds used in makingglass faces for building bricks.

The object of my invention is to provide a machine that in its action under engine power, can be controlled to obey the will of its operator in several ways, fully equal to hand work, and much more powerful and rapid.

First. By increasing or lessening the frequency of the strokes of the machine while it is in motion at any rate of speed.

Second. By increasing or lessening the lengths of the strokes of the machine while it is in motion at any rate of speed.

Third. By readily increasing or lessening the pressure of the strokes of the machine, submitted at the point of friction, while the machine is in motion at any rate of speed.

The mechanism of the machine is illustrated in the accompanying drawings, in which- Figure I. represents the machine entire ready for action.

Fig. II. represents a vertical view of the head end of the pole g, at the right, which transmits the force given bythe vibrating rod 6, to the pendent stick .tt, which holds the polishing stone M,

Fig] III. represents a vertical view of the small clevy on the left end of the pole (7, for embracing the pendent stick z 'gt, which holds the polishing stone at its lower ex- 3 tremity.

The results desired in the use of the polishing machine are secured by pressure taken from an engine and by means of several vibrating levers in reciprocating action under the power of the engine, as illustrated in the accompanying drawings, in which, A, Fig. I. represents a substantial bench of convenient height, secured to the floor. While A represents an overhead shelf or plank,

- to which appended attachments for the machine may be secured. And represents a rotary metal disk, or circular plate, drilled at the center for adjustment on the shaft, and drilled at different distances from the center, to accommodate the stud q, in shifting to fix the initial maximum strokes of the machine when preparing it for action.

The plate is rotated by a belt and pulley at the other end of the shaft, not a part of this invention.

hen in motion, the iron rod 6, slides freely up and down through a short metallic tube, or sleeve, in which is fixed in a thick collar 7, and secured by a set screw 76, Figs. I and II. so that the pole 9 may be held in its proper elevation while the machine is in motion, by the cord 'G, G, G attached to the set screw 70, and passing up over a pulley at a, and from thence to its companion D, and from thence downwardly to a notch in the edge of the bench at P, where it is held in either one of the several positions indicated bythe several balls on the cord G.

The pole g, terminating at the head, or right end, has horizontal metal jaws of the clevy form wide enough to clasp the collar f, and hinge thereto bymeans of two spurs 00, fixed in the lateral sides of the collar 7, and shown in the Fig. II.

The left end of this pole g terminates at N with a smaller metal clamp, or jaws, also of the clevy form, just wide enough to take in the pendent stick #1: at the'point N, to which it becomes attached by a bolt passing through the holes of the clevy, and a corresponding hole in the pendent stick# said holes of the clevy being shown in the Fig. No. III.

The arm 5 is hinged at b to the bloc-k b6 and also at b", to accommodate the rod 6, when the rotations of the disk draws it down till'the arm I) is seen at the dotted line 0.

This device admits of the foot of the rod 6, which embraces the stud at g, advancing and retreating with the rotations of the disk in the vertical plane of its action, while the headend of this rod 6 at 6" only rises and falls with a motion that approximates a vertical line.

This rod 6 is seen inclined to the left, which is necessary to make the distance from the point N to the point 00, the same as the distance from the point N to the point n, so that. the center of motion at N, will remain practically the same during the various shiftings of the sleeve h, to any point up the rod 6 while the machine is in motion, without dragging the polishing stone M to a new center of motion in its work.

Hence, to reduce or lengthen the strokes of the polishing stone M, it is only necessary to adjust the cord G at the left, by placing any ball desired on the line G for raising or lowering the head of the pole 9, under the notch in the table while the machine is in full motion at any rate of speed, which determines the length of the strokes of the polishing stone M.

The dotted lines adjacent to, and as shadows of the arm 7), and the rod 6, and of the pole g, and of the pressure lever E, and of the pendent stick it, all indicate the regular reciprocating positions taken by them respectively while in action: Though the pressure lever moves but slightly when borne down for the work of polishing.

The polishing stone M is bound to the lower end of the pendent stick :fi: by' a metal band 0 and a set screw 00.

This pendent stick is hinged to-the pressure lever E at the point and the opposite end of the pressure lever is made fast at E by a hinge to any secure means of attachment provided for the purpose.

The pressure lever and the pendent stick, as described, may both be thrown out of use, and so retained, by the catch W, which is pressed into place by the spring V.

Y represents a plate in position for-polishing, resting on a sliding board Z and the represents a brace attached swively to the rear edge of the bench A and attached at the upper end of the brace to the foot of the pendent stick i]: in a way to hold the pendent stick laterally in position while the sliding board brings any point on the plate Y, to be polished, under the line of motion made by the polishing stone.

0000 represents a weight which can be slid either way on the rod F, attached under the pressure lever E for that purpose to secure the variations of pressure, when the pressure is not taken from a boiler or engine, as described below.

Thus far, the parts of the machine described, operate in the same vertical plane, while the following are specifications for another vertical plane as a part of the same invention auxiliary to the one already described, and a little in the rear to the one already set forth, till they culminate, or connect in the inverted airpump R.

By tapping the engine head, as at 0 Fig. I. or taking the pressure directly from a steam boiler, expansive energy is taken into the pipe 0, the flow of which is controlled at the cock on, where the supply can be increased or diminished at will, and retained by the check valve 1, in the pipe leading to, and for filling the metallic storage chamber C, which has a safety valve for equaliz ing by its elasticity, the pressure, to avoid the jerky effects that would come if the pressure were taken directly from the pipe. The pressure is transmitted down the pipe H to the cock L, where it is held for use.

In order to start the polishing, the catch TV is drawn back, which liberates the pressure lever E, and lets the pendent stick #4: holding the polishing stone, drop onto the plate Y to be polished. And then, the cock J being open, by gently turning the cock L, which unscrews, the amount of pressure is indicated at the gage K and sent up the pipe I to the airpump R, where it enters the chamber S, whose escape is closed at R.

The pump being properlysecured, as at Q and Q, is laid open to show its interior, where the pressure exerts its force on the piston head of the airpump at S".

The pressure thus obtained forces the piston (T) down on the pressure lever E, which in turn bears down on the pendent stick and so on to the polishing stone M, and the plate Y, with the degree of pressure desired, whilgh is constantly indicated by the gage at The means for increasing or lessening the speed of the machine are those commonly used for engines in general.

What I claim as my invention, or discovery:

1. A polishing machine comprising a stationary shelf, pulleys supported thereby, a block projecting from the under surface of the shelf, an arm pivoted to said block, a collar fitted to said arm, a rod movable through said collar and a rotatable disk having adjustable pivotal connections between the same and said bar which moves through the collar, a pressure bar pivoted at one end, an adjustable weight upon the pressure bar, a pendent bar pivoted to the pressure bar, a polishing stone carried by the pendent bar, pivotal bar connections between the pendent bar and said bar which is movable through said collar, and means connected to the bar for raising and lowering the same.

2. A polishing machine comprising a stationary shelf. pulleys supported thereby, a block projecting from the under surface of the shelf, an arm pivoted to said block, a collar fitted to said arm, a rod movable through said collar and a rotatable disk having adjustable pivotal connections between the same and said bar which moves through the collar, a pressure bar pivoted at one end, an adjustable weight upon the pressure bar, a pendent bar pivoted to the pressure bar, a polishing stone carried by the pendent bar, pivotal bar connections between the pendent bar and said bar which is movable through said collar, a rope secured at one end to said ivotal bar and passing over said pulleys, a table, balls upon the latter, and apertures in said table through which said rope and balls are adapted to pass.

8. A polishing machine comprising a stationary shelf, pulleys supported thereby, a block projecting from the under surface of the shelf, an arm pivoted to said block, a collar fitted to said arm, a rod movable through said collar and a rotatable disk having adjustable pivotal connections between the same and said bar which moves through the collar, a pressure bar, a notched, bailshaped member secured thereto and a weight adjustably mounted upon said bail-shaped Copies of this patent may be obtained for five cents each, by addressing the member, a pendent bar pivoted to the pressure bar, a polishing stone carried by the pendent bar, pivotal bar connections between the pendent bar and said bar which is movable through said collar, means connected to the bar for raising and lowering the same, a piston and cylinder in which the same is mounted, and a stem to said piston adapted to bear against the pressure bar. A. R. SEAMAN. Witnesses:

LAURENCE DONEGAN, MATT MONAHAN.

Commissioner of Patents,

Washington, D. G. 

